Merge pull request #388 from leonindy/master

add send weixin feature for ExceptionALert
finish coding for alert summary module
fix serval bugs for alert summary module
add summary page, need to fix bugs
alert summary phase 1
add creation-date for alert-summary dal
modify the app config
agent重构
modify the app
Merge branch 'master' of github.com:dianping/cat
fix weixin bug
resolve conflicts
Merge branch 'master' of https://github.com/dianping/cat
modify the app
Merge pull request #390 from youyong205/master

app data
Merge branch 'master' of https://github.com/dianping/cat
remove cookie filter
Merge pull request #391 from youyong205/master

remove cookie filter
move summary to statistics tab
Merge branch 'master' of https://github.com/dianping/cat